The electrical and optical operation of ZnCdxSe1-x/ZnSe/ZnSySe1-y and
Zn1-xCdxSe/ZnSySe1-y/Zn1-zMgzSuSe1-u quantum-well blue-green injection
lasers were studied by numerical simulation. The physical model in th
is study is based on the self-consistent solution of Poisson's equatio
n, the current continuity equations, including the thermionic emission
theory for carrier transport across heterojunctions, the photon rate
equation and the scalar wave equation. The optical gain of strained qu
antum well lasers was calculated using k.p theory based on the inter-b
and electron-hole pair recombination. Good agreement was obtained betw
een the experimental and the calculated Zn1-xCdxSe/ZnSySe1-y/Zn1-zMgzS
uSe1-u laser characteristics, over a wide temperature range of 85 to 3
94 K, without including excitonic effects.